In the Linux kernel, the following vulnerability has been resolved:

IB/qib: Protect from buffer overflow in struct qib_user_sdma_pkt fields

Overflowing either addrlimit or bytes_togo can allow userspace to trigger
a buffer overflow of kernel memory. Check for overflows in all the places
doing math on user controlled buffers.

References

• https://nvd.nist.gov/vuln/detail/CVE-2021-47485
• https://git.kernel.org/stable/c/0d4395477741608d123dad51def9fe50b7ebe952
• https://git.kernel.org/stable/c/0f8cdfff06829a0b0348b6debc29ff6a61967724
• https://git.kernel.org/stable/c/3f57c3f67fd93b4da86aeffea1ca32c484d054ad
• https://git.kernel.org/stable/c/60833707b968d5ae02a75edb7886dcd4a957cf0d
• https://git.kernel.org/stable/c/73d2892148aa4397a885b4f4afcfc5b27a325c42
• https://git.kernel.org/stable/c/bda41654b6e0c125a624ca35d6d20beb8015b5d0
• https://git.kernel.org/stable/c/c3e17e58f571f34c51aeb17274ed02c2ed5cf780
• https://git.kernel.org/stable/c/d39bf40e55e666b5905fdbd46a0dced030ce87be